Furnace-door-operating device.



' 0. M. GOSSETT.

FURNACE 110011 OPERATING DEVIOE.

APILIOATION IILBD JUNE 1, 1909.

Patented Feb. 1, 1910.

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d. M. GOSSETT. FURNACE DUDE OPERATING DEVICE. APPLIUATION'FILED JUNE 1,1909. 4 93 Patented Feb. 1, 1910.

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OQO O OO OQ l/vxtneawo oLIvnn MARTEEN GOSSETT, or SEYMOUR, INDIANA.

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Specification of Letters Patent.

lt atentet't net. 1, 1910.

Application filed June 1, 1909. Serial No. 499,320.

To all whom it may concern:

Be it known that I, ()Lrvnn M. Gossn'r'r, a citizen of the UnitedStates, residing at Sey niour, in the county of Jackson and State ofIndiana, have invented a new and useful .Furnace-Door-Operating Device,of which the following is a specification.

This invention relates to improvements in operating devices for the firedoor of locomotive boiler furnaces, and more particularly a pedalactuated device of this kind.

The object of the present invention is to provide an operating device ofthe kind stated which is simple in structure, and which can be easilyactuated, and also to provide improved means for holding the door inopen position.

Vith the foregoing objects in view the invention consists in a novelconstruction and arrangement of parts to be hereinafter described andclaimed, reference being had to the drawings hereto annexed forming apart of this specification, in which drawings Figure 1 is a perspectiveview showing the application of one form of the invention. Fig. 2 is aperspective view showing another form.

In the drawing 5 denotes the fire door of a locomotive steam boilerfurnace 6. This door is connected to the front wall of the furnace by asuitable hinge structure 7. On the door frame are mounted bearings 8which support a rocker shaft 9 which is bent intermediate its ends intoa strap 10 and securely fastened to the door. The rocker shaft is inaxial alinement with the hinge, so that upon rocking said shaft the doormay be swung open or closed. Fulcrumed on a stud 11 mounted on the wallof the furnace is a lever 12 one end of which is connected by a link 13to a crank arm 14- on one end of the rocker shaft 9. This crank armextends in a curve from the rocker shaft, its outer end to which thelink 1.3 is connected being suitably offset so that said link may clearthe other portion of the crank arm.

Pivotally mounted beneath the floor 15, in front of the furnace, insuitable bearings 16, is a rocker shaft 17 having at one end a curvedrocker arm 18 which is connected near its outer end by a link 19 to thatend of the lever 12 opposite the end to which the link 13 is connected.That end of the rocker arm to which the link 19 is connected is weightedas indicated at 20, and that end of the lever 12 to which said link 19is connected is also weighted by being made larger than said end asindicated at 21. The object of making these parts heavier will bepresently described. From the rocker shaft 17 also extends an arm 22having at its outer end a lateral bend 23 which is engaged by the forkedend 24. of a stem 25 carried at the free end of a pedal 26 which ispivoted at 27 to the floor 15. The stem 25 is also provided with ahandle 28 in order that the rocker shaft 17 may be operated by hand.Said shaft is adapted to be rocked in its bearings by depressing thepedal 26 or by pushing down on the handle 28. When the rock shaft isoperated as stated, the rocker arm 18 is swung, which movement iscommunicated to the lever 12 by the link 19, said lever swinging on itsfulcrum, and through the link 13 and the crank arm 14: the shaft 9 isrocked, thus swinging the door 5 open. The fork24c may be disengagedfrom the part 23 which disconnects the pedal and permits it to belowered to extend flush with the floor.

At 29 is indicated a hook shaped catch, which upon being engaged overthe rocker arm 18, locks the same, and thus holds the door in openposition. The parts 20 and 21 serve as counterbalances, and render theopening of the door easier. The opening movement of the door is alsoassisted by a spring 30 connected at one end to a second crank arm 31 onthe rocker shaft 9, and at the other end to a bracket 32 mounted on thewall of the furnace.

The door is held closed by means of a rod 32 which is slidable in frontthereof. This rod is operated by means of a rocker shaft 33 supported insuitable bearings 34 beneath the floor 15, and having at one end alateral bend 35 which is connected to the rod. At the opposite end ofthe rocker shaft is a lateral bend 36 which extends through an opening37 in the floor and is adapted to be tripped by the foot, to rock theshaft 33, and thus actuate the rod 32.

In the modified form of device shown in Fig. 2 I employ instead of therocker shaft 17 a lever 38 which is fulcrumed at one end in a suitablebearing 39 beneath the floor 15, and is connected atits other end bymeans of a link 10 to the lever 12. Intermediate its ends the lever 38is connected to a pedal 41. Upon depressing the pedal, the door will beopened as in the first instance.

In the last described form of operating device, the door is held in openposition bymeans of a sliding bolt 42 adapted to be extended above a pin43 projecting from the link 40.

Both of the operating devices herein described are simple in structure,and can be easily operated, the arrangement of levers and links beingsuch that but little effort is required to open the door.

What is claimed is:

The combination with a furnace door and its hinge, of a rocker shaftjournaled on the furnace wall in axial alinement with the hinge of thedoor, and bent intermediate its ends into an ofl-set portion which isfastened to the door, crank arms on the ends of 15 the rocker shaft, abracket mounted on the furnace Wall, a spring connected at its ends tothe bracket and to one of the crank arms, a pedal actuated lever, and aconnection between said lever and the other crank arm.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two Witnesses.

OLIVER MARTEEN GOSSETT.

Witnesses:

J. E. BAUGHMAN, LEWIS BAUGHMAN.

